Ricin-like plant toxins are evolutionarily related to single-chain ribosome-inhibiting proteins from Phytolacca.
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چکیده
منابع مشابه
Anoctamin and transmembrane channel-like proteins are evolutionarily related.
The anoctamin (ANO) family of proteins, consisting of 10 members in mammals, are transmembrane proteins that have Ca2+-activated Cl- channel activity. The transmembrane channel-like (TMC) family of proteins, consisting of 8 members in mammals, are also transmembrane proteins of which mutations are implicated in various human conditions, such as hearing loss and epidermodysplasia verruciformis. ...
متن کاملRibosome-Inactivating Proteins: From Plant Defense to Tumor Attack
Ribosome-inactivating proteins (RIPs) are EC3.2.32.22 N-glycosidases that recognize a universally conserved stem-loop structure in 23S/25S/28S rRNA, depurinating a single adenine (A4324 in rat) and irreversibly blocking protein translation, leading finally to cell death of intoxicated mammalian cells. Ricin, the plant RIP prototype that comprises a catalytic A subunit linked to a galactose-bind...
متن کاملRibosome-mediated folding of partially unfolded ricin A-chain.
After endocytic uptake by mammalian cells, the cytotoxic protein ricin is transported to the endoplasmic reticulum, whereupon the A-chain must cross the lumenal membrane to reach its ribosomal substrates. It is assumed that membrane traversal is preceded by unfolding of ricin A-chain, followed by refolding in the cytosol to generate the native, biologically active toxin. Here we describe bioche...
متن کاملInhibiting Microbial Toxins Using Plant-Derived Compounds and Plant Extracts
Many pathogenic bacteria and fungi produce potentially lethal toxins that cause cytotoxicity or impaired cellular function either at the site of colonization or other locations in the body through receptor-mediated interactions. Various factors, including biotic and abiotic environments, competing microbes, and chemical cues affect toxin expression in these pathogens. Recent work suggests that ...
متن کاملErratum: Differences in Ribosome Binding and Sarcin/Ricin Loop Depurination by Shiga and Ricin Holotoxins. Toxins 2017, 9, 133
We wish to make the following correction to the published paper [1].[...].
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1984
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(17)42542-7